Exclude password protected posts from WordPress loop

// Filter to hide protected posts
function exclude_protected($where) {
    global $wpdb;
    return $where .= " AND {$wpdb->posts}.post_password = '' ";
}

// Decide where to display them
function exclude_protected_action($query) {
    if( !is_single() && !is_page() && !is_admin() ) {
        add_filter( 'posts_where', 'exclude_protected' );
    }
}

// Action to queue the filter at the right time
add_action('pre_get_posts', 'exclude_protected_action');

Simply copy above code and paste at the end of functions.php file and refresh your loop posts pages
Amazing you have removed password protected posts from loop list.